Ask your own question, for FREE!
Mathematics 19 Online
OpenStudy (anonymous):

Find m angle T

OpenStudy (anonymous):

OpenStudy (misty1212):

HI!! (again) identical to the last one, only the numbers are different

OpenStudy (anonymous):

yea i know but i have a problem with these so can you just write it out for me and i ccan solve it myself ?

OpenStudy (misty1212):

we can use the same wolfram link i sent the last time, just change the numbers in it

OpenStudy (anonymous):

so would it be 22^2 + 12^2 + 19^2

OpenStudy (misty1212):

but you might have to take a test or quiz on this in class so maybe we do it slowly will you have to do that?

OpenStudy (misty1212):

no hold on

OpenStudy (misty1212):

the numerator is \[\huge b^2+c^2\color{red}-a^2\]

OpenStudy (misty1212):

so you have to properly identify \(a\) it is the side opposite the angle

OpenStudy (misty1212):

try again

OpenStudy (anonymous):

wait so it would be: arccos((22^2+12^2-19^2)/(22*12*19))

OpenStudy (misty1212):

not quite

OpenStudy (misty1212):

what is the side OPPOSITE angle T

OpenStudy (anonymous):

12?

OpenStudy (misty1212):

yes so your numerator was wrong

OpenStudy (misty1212):

also the denominator is \(2bc\) not \(abc\)

OpenStudy (misty1212):

try again, i bet you get it this time

OpenStudy (anonymous):

so arccos((22^2+12^2-19^2)/(2*12*19)) ?

OpenStudy (misty1212):

hmm still confused about the opposite side?

OpenStudy (misty1212):

it is 12, not 19

OpenStudy (anonymous):

arccos((22^2+19^2-12^2)/(2*12*19)) ok i think i got it?

OpenStudy (misty1212):

almost !

OpenStudy (misty1212):

the denominator does not have the side opposite the angle in it, it is the other two sides, the adjacent sides

OpenStudy (misty1212):

so replace that 12 in the denominator by the 22, and you will have it

OpenStudy (misty1212):

i am not trying to torture you, just trying to make sure you can get it on your own i will write the answer if you want me to

OpenStudy (anonymous):

arccos((22^2+19^2-12^2)/(2*22*19))

OpenStudy (misty1212):

YES!!

OpenStudy (anonymous):

ok so the answer would be 33.02 degrees ?

OpenStudy (misty1212):

let me check

OpenStudy (misty1212):

yuup

OpenStudy (anonymous):

ok thanks again ur alot of help!

OpenStudy (misty1212):

yw \[\color\magenta\heartsuit\]

OpenStudy (misty1212):

if you have another one and want me to check the answer for you i can

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!